Concrete bar



H. K. DYSON.

CONCRETE BAR.

APPLICATION FILED NOV-22, I918. RENEWED NOV. 11. 1920.

1,3 2,931, 4 Patented Dc.21,1920.

Efitiorlzey.

PATENT OFFICE.

HERBERT KEMPTON DYSON, OF LONDON, ENGLAND.

CONCRETE BAR.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application filed November 22, 1918, Serial No. 263,785. Renewed November 17, 1920. Serial 1V0. 424,762.

To all whom it may concern Be it known that I, HERBERT KEMPTON Dyson, a subject of the King of England and resident of London, England, have invented certain new and useful Improvements in Concrete Bars, of which the following is a specification.

This invention relates to concrete bars such as those employed for supporting the slabs of glass in windows, or for supporting sheeting such as thin plates made of asbestos and Portland cement in roots and other parts of buildings.

It has previously been proposed to use reinforced concrete glazing bars the central webs of which project between the glass sheets, the said sheets being secured by lead cleats formed with beveled surfaces and pressed down by the heads and nuts of bolts which pass through transverse holes in the webs of the glazing bars.

In accordance with my invention, the bar, preferably reinforced, is provided at intervals with recesses, substantially parallel. to the center line of the bar section, for the reception of screws or the like, the screws bearing upon cover slips of suitable material, such as asbestos and cement which press the slabs of glass or other material against the bar; asbestos tape, felt or other suitable material may be interposed between the slabs and the bar and also between the cover strip and the slabs. In the case of sheeting which is continuous over the bar the cover strip may be omitted.

The accompanying drawings illustrate the preferred embodiment of my invention; in these drawings Figure 1 shows a section of the bar showing the method of fixing the glass slabs.

Fig. 2 is a side elevation of a block constructed in accordance with the present invention but of materially-reduced height.

Fig. 3 shows a section of the bar illustrating the method of attaching asbestos and cement sheeting.

The bar a is preferably formed of line concrete and reinforced by metal bars a, b with wire links d at intervals.

The screwed holes f in the concrete may be formed in a manner previously proposed for reinforced concrete sleepers by a spiral wire core 9 which is cast in a cored hole in the concrete by inserting a brass or copper screw in the coil and fixing it in the concrete; when the latter has set sufliciently the screw is eased and withdrawn thus leaving the coil firmly embedded in the concrete and forming a threaded hole.

The screws 6, preferably of brass or copper, may pass through the cover strips 7', and asbestos tape, felt or other suitable material it is interposed between the stripsj and bars 0 and the glass or other slabs 2', thus forming a water-tight joint which allows for expansion and which can be readily taken apart for renewal or repairs.

The top of the bar a is preferably provided with a recess C opening through the ends of the bar and designed to provide a leakage channel to carry any water which may happen to leak through the joint ends of the bar are provided with lugs C to facilitate attachment of the bar to the window or other frame or equivalent part.

I have shown the strip j as of rectangular section, but it may be of domed or other shape when preferred.

In the arrangement shown in Fig. 3, the slabs i of asbestos and cement or other material are fixed by screws 6 passing through holes in them and bearing direct upon them.

I claim 1. A concrete bar having a surface for supporting plates, said bar having a recess opening into said supporting surface and open at the ends to provide a leakage channel for water finding its way beneath the supported plates, a hollow threaded member embedded in said bar and open at the upper end, and a plate holding means adapted for threaded cooperation with the hollow memher.

2. A concrete bar having a surface for supporting plates, said bar having a recess opening into said supporting surface and open at the ends to provide a leakage channel for water finding its way beneath the supported plates, the bar having end proj ections to permit interfitting with a fixture for supporting the bar, a hollow threaded member embedded in said bar and opening to the supporting surface of the bar, and a plate holding member adapted for threaded cooperation with the hollow member.

In testimony whereof I allix my signature in presence of two witnesses.

HERBERT KEMPTUN DYSON.

Witnesses:

EWART S. ANDREWS, A. R. J. RAMSEY. 

